Samsung 850 EVO250 GB · 2.5-inch SATA · MZ-75E250BW- Capacity
- 250 GBThis one: 240 GB
- Rated sequential read
- 540 MB/sThis one: 500 MB/s
STORAGE
Kingston A400
240 GB · 2.5-inch standalone SATA · Kingston part SA400S37/240G
- Capacity
- 240 GB
- SSD / HDD
- SSD
- Form factor
- 2.5-inch
A 240 GB 2.5-inch SATA SSD rated up to 500 MB/s read and 350 MB/s write, with an 80 TB endurance rating and a three-year warranty.
Prices & buying options
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THE ACTUAL PRODUCT
Compare with Samsung 850 EVO
Specifications checked 11 Sept 2026Manufacturer specifications, not a hands-on test.
The nearest checked drives by key specifications, with what differs from the Kingston A400. The first matches the Compare button above.
Samsung 850 EVO250 GB · 2.5-inch SATA · MZ-75E250BW
MSI SPATIUM S270960 GB · 2.5-inch SATA- Capacity
- 960 GBThis one: 240 GB
- Rated sequential write
- 450 MB/sThis one: 350 MB/s
Samsung 860 EVO1 TB · 2.5-inch SATA · MZ-76E1T0BW- Capacity
- 1000 GBThis one: 240 GB
- Rated sequential read
- 550 MB/sThis one: 500 MB/s
Key strengths
Rated up to 500 MB/s sequential read and 350 MB/s sequential write over SATA 6 Gb/s, in a standard 7 mm-high 2.5-inch drive with a published average power draw of 0.279 W.
Before you buy
Modest 80 TB endurance and a three-year warranty. Kingston does not state the NAND type, controller or whether it has a DRAM cache, and it needs SATA data and power connections.
Every specification. With its source.
Full specifications
Exact configuration: 240 GB · 2.5-inch standalone SATA · SA400S37/240G
23 specifications in 6 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”. 1 row repeats a listed fact in the manufacturer’s own wording, kept under “Manufacturer wording”.
Capacity & format
9 items
- Capacity
- 240 GB
Manufacturer-listed capacity; formatting and reserved functions reduce usable storage.
- SSD / HDD
- SSDSource
- Form factor
- 2.5-inch
Part configuration; physical and electrical compatibility both matter.
- Interface and version
- SATA 6 Gb/s
Backward compatible with SATA 3 Gb/s; Kingston calls these SATA Rev. 3.0 (6 Gb/s) and SATA Rev. 2.0 (3 Gb/s). Kingston does not mention 1.5 Gb/s. · Requires compatible SATA data and power connections.
- DRAM cache present
- Not listed by the manufacturer
Kingston does not state this for this model. · Kingston does not say whether it has onboard DRAM.
Source - Drive dimensions
- 100 × 69.9 × 7 mm
Standalone SATA enclosure. Dimensions apply to this capacity/configuration; allow installation clearance.
- Drive weight
- 41 g
Manufacturer drive weight for this capacity, excluding packaging.
- Controller
- Not listed by the manufacturer
Kingston does not state this for this model. · Kingston does not name the controller for this capacity.
Source - NAND type
- Not listed by the manufacturer
Kingston does not state this for this model. · Kingston does not state the NAND type, generation or supplier for the 240 GB model.
Source
Performance
3 items
- Rated sequential read
- 500 MB/s
Kingston ATTO data-transfer claims, fresh/out-of-box on a SATA Rev. 3.0 motherboard. Host hardware, software and usage affect results. Kingston does not list a sustained post-cache speed.
Source - Rated sequential write
- 350 MB/s
Kingston ATTO data-transfer claims, fresh/out-of-box on a SATA Rev. 3.0 motherboard. Host hardware, software and usage affect results. Kingston does not list a sustained post-cache speed.
Source - Manufacturer-listed DirectStorage support
- Not listed by the manufacturer
Kingston does not state this for this model. · Kingston does not list DirectStorage support for this model.
Source
Manufacturer wording (1)
The same facts in the manufacturer’s combined or original wording, each with its source.
- Rated performance and conditions
- Up to 500 MB/s sequential read; up to 350 MB/s sequential write
Kingston ATTO data-transfer claims, fresh/out-of-box on a SATA Rev. 3.0 motherboard. Host hardware, software and usage affect results. Kingston does not list a sustained post-cache speed.
Endurance & warranty
5 items
- Published endurance rating (TBW)
- 80 TB
Published endurance rating derived from the JEDEC Client Workload (JESD219A). Warranty ends on the stated time or wear conditions. This is not a guaranteed service life.
- Limited warranty time
- 3 years
Maximum time term; coverage can end earlier at SATA SMART attribute 231 (SSD Wear Indicator) reaching a normalized value of 1 in Kingston SSD Manager. Eligibility and full terms apply.
- Warranty terms and endurance if applicable
- 3-year conditional limited warranty, or SATA SMART attribute 231 (SSD Wear Indicator) reaching a normalized value of 1 in Kingston SSD Manager, whichever occurs first
Subject to original-purchase eligibility and full manufacturer terms. Published TBW is a separate endurance rating from the wear-indicator warranty limit.
- Manufacturer workload scope
- Desktop and notebook workloads; not intended for servers
Workload limitation in the datasheet. Not intended for enterprise or server use.
Source - Manufacturer MTBF rating
- Not listed by the manufacturer
Kingston does not state this for this model. · Kingston's 2022 datasheet lists one million hours; the current product page does not confirm a rating.
Source
Power
1 item
- Published power conditions
- 0.195 W idle; 0.279 W average; 0.642 W maximum read; 1.535 W maximum write
Manufacturer family-sheet states; no capacity-specific test system or average workload is supplied. Not a measured continuous consumption figure.
Source
Environment & reliability
4 items
- Operating temperature
- 0–70 °C
Manufacturer operating range; not a measured temperature under a particular workload.
- Storage temperature
- −40–85 °C
Published non-operating storage range, kept separate from the 0–70 °C operating range.
Source - Non-operating vibration rating
- 20 G peak, 10–2000 Hz
Manufacturer vibration rating with its stated frequency range. Not a drop test; ratings from different test protocols are not directly comparable.
Source - Operating vibration rating
- 2.17 G peak, 7–800 Hz
Manufacturer operating vibration rating. No independent drop, shock or reliability test is implied.
Source
Compatibility & box
1 item
- Included cloning software
- Acronis True Image for Kingston
The part page includes cloning software. Current Kingston instructions require an installed Kingston internal SSD, Windows 11/10/8.1, administrator rights, internet download through Kingston SSD Manager and licence acceptance. This software does not support macOS or Linux; that does not declare the drive itself incompatible.
Compare with another drive
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